﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
           DateTime dob = new DateTime (1979, 07, 28);
            DateTime dob1 = DateTime.MinValue;
            string dobStr;
            if (dob == DateTime.MinValue)
            {
                dobStr = "";
            }
            else
            {
                dobStr = dob.ToString();
            }
            Console.WriteLine(dobStr);
        }
    }
}
